Improvements nut-locks



` clear, and exact Vdescri being had to the acco y' adapted to a groove inV the bolt -furnished with a screwwvithrelation t'o each other scribed. f

ltion.

.part of my specification, Figure l i UNITED STATES PATE -EEICE EDwARDczARNIEeKr, OVE ALLEGHENY, PE NNsYLVANiA. f

IMPROVEMENT iN NUT-Locus.

Specification forming part -of Letters Patent No. 140,119, dated June 24, 1873; application tiled September 11, 1872.

To all whom it magrconcern: l Be it known that I, EDWARD CzAENIEcKI, ot' Allegheny,'in the county of Allegheny and State of Pennsylvania, -hav'e invented a new `and useful Improvement in Lock-N nts; and I do hereby declare that the following is a full, Aption thereof, reference nipanying drawings and to the letters of reference marked thereon.

The nature ot' my' invention consists in a washer provided with a series of cut-s -in its y outer edge, extending inward on lines radiat- Y ing from its center,

said washer being also proue in its opening, which is side of a screwnut, said' washer, ed andoperating as hereinafter de' vided with a tong bolt, and unt being com-bin To'enable othersskilledin the-art to make land use myinventioml will proceed to de'- scribe more full y its construction and opera1 In the accompanying drawings, which form.

4 satop view or plan ot' the washer. Fig. 2 represents the boltplacedin a bar of wood, representing the bolt, provided with the washer and nut, wtha section of the washer between two -ojt' 4the cuts turned l.up against the sides?, of the nut for 4the purpose ot' locking then'ua Fig. 3 is a side view ot' the bolt. Fig. 4 is a transverse section ot V'the bolt at line. yv of Fig. 3.

A represents a bar ot' wood, through which passes the` bolt B, which is of ordinary construction,- except the groove G made in its metal. The outer edge of the Washer D is provided with a series of cuts, e, which extend vinward on lines radiating from the center of opening 4i, in the washer, 'isadapted to the'groove bolt B. The washer D is placed over the bolt, with its tongue, f, inthe groov'e-0, the nut l1J is then screwed on vthe bolt B, and when brought home against the washer one ot the sections between two of the cuts e is bent up against the side of the nut, as shown 'in Fig. 2, thereby holding the nut ,in a fixed position upon the bolt', the tongue f in the'groove G preventing the washer from turning.

By constructing the Washer D in the lmanner hereinbefore described the nut can be securely locked .at any point on the bolt when brought home against the washer by sin1 ply turningup one .of the sections between two ofthe cut-se.

is a tongue, f, which C in the side of the bining them with anordinary screw-nut foi` lpose set forth.

EDW. 'CZARNIECKL I Witnesses l:

side, as shown in Figs. 3 and 4. D represents' the washer. which is constructed of -sheetf A. C. JOENsToN, i-.JAMEs J. JOHNSTON.`

it. Projecting inward from the side of the' The advantage ot' a washer and bolt constructed as hereinbefore described, and comthepurpose of locking it upon the bolt will 

